The answer is that the parameter should be named 'max_tokens' instead of 'maxTokens'. This is because the OCI Generative AI service strictly expects JSON keys in snake_case format, not camelCase, so the service cannot recognize 'maxTokens' as a valid parameter, causing it to fail validation and return an error that the value must be an integer. On the Oracle Cloud Infrastructure Generative AI Professional 1Z0-1127 exam, this tests your understanding of API contract adherence and the specific naming conventions required by OCI endpoints, a common trap where developers assume camelCase from other platforms will work. A reliable memory tip is to think of OCI as preferring underscores like an Oracle database column name—when you see a parameter like maxTokens, always convert it to max_tokens to pass validation.
1Z0-1127 Using OCI Generative AI Service Practice Question
This 1Z0-1127 practice question tests your understanding of using oci generative ai service. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Refer to the exhibit. A developer sends this JSON payload to the /chat endpoint. The response includes an error that 'maxTokens' must be an integer. What is the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The parameter should be 'max_tokens' instead of 'maxTokens'
The OCI Generative AI service expects the parameter name 'max_tokens' (snake_case) for specifying the maximum number of tokens in the response, not 'maxTokens' (camelCase). The error message indicates that the value is not being recognized as an integer because the JSON key itself is incorrect, causing the service to fail validation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The compartmentId is missing
Why it's wrong here
CompartmentId is present.
✗
The temperature value is too low
Why it's wrong here
Temperature of 0.5 is valid.
✓
The parameter should be 'max_tokens' instead of 'maxTokens'
Why this is correct
The API expects snake_case parameters.
Related concept
Read the scenario before looking for a memorised answer.
✗
The model name 'cohere.command-light' is incorrect
Why it's wrong here
That model name is valid.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the difference between snake_case and camelCase parameter names in OCI services, and the trap here is that candidates familiar with OpenAI's API conventions might assume 'maxTokens' is correct, overlooking OCI's strict snake_case requirement.
Detailed technical explanation
How to think about this question
OCI Generative AI uses snake_case for all request parameters in its REST API, following the standard naming convention for JSON payloads in Oracle Cloud services. The 'max_tokens' parameter controls the maximum number of tokens generated in the response, and if the key is misspelled or uses a different case, the service treats it as an unknown field and may either ignore it or, as in this case, fail validation because the expected integer value is missing. In real-world scenarios, developers migrating from OpenAI's API (which uses camelCase like 'maxTokens') often make this mistake, as OpenAI uses a different naming convention.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-1127 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Using OCI Generative AI Service — This question tests Using OCI Generative AI Service — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The parameter should be 'max_tokens' instead of 'maxTokens' — The OCI Generative AI service expects the parameter name 'max_tokens' (snake_case) for specifying the maximum number of tokens in the response, not 'maxTokens' (camelCase). The error message indicates that the value is not being recognized as an integer because the JSON key itself is incorrect, causing the service to fail validation.
What should I do if I get this 1Z0-1127 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This 1Z0-1127 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-1127 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.